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1. Define hydraulic;

The study of pressure in liquids.

2. Define pneumatic:

Study of pressure in gases.

3.What are 4 hydraulic devices?;

-Jaws of life

-Cutters

-Rams

-Spreaders

4. What are 4 pneumatic devices?;

-Air brakes

-Cable jetting

-Pressure regulator

-Jackhammer

5. How do hydraulic systems work?;

Hydraulic systems are devices that transmit applied forces through a liquid to move something else,because of pressure.

6. How do pneumatic systems work?;

A gas transmits a force exerted on the gas in an enclosed space.

7. What are the major differences between hydraulic and pneumatic systems?;

One of the main differences between the two systems is that in pneumatics, air is compressible. In hydraulics, liquids are not.